US5374600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-absorbent polymer and use therefor
Assignee: Nippon Shokubai Co Ltd
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Filing: 1993-09-27
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Granted: 1994-12-20
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Expires: 2013-09-27
Abstract
Abstract A swellable oil-absorbent agent formed of cross-linked polymer (P) obtained by polymerizing a monomer component comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth)acrylate the alkyl group of which has 10 to 16 carbon atoms and possessing one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer possessing at least two polymerizable unsaturated groups in the molecular unit thereof (providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight).
Inventors
- 👤 Yoshiyuki Hozumi
- 👤 Toru Inaoka
- 👤 Tomoki Gomi
- 👤 Takakiyo Goto
- 👤 Toru Uno
- 👤 Kenji Rakutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:07
CPC Classifications
A; A01; A01K; A01K97/00; A01K97/04; A01K97/045; A01N; A01N25/00; A01N25/08; A01N25/10; B; B01; B01D; B01D15/00; B01D17/00; B01D17/02; B01D17/0202; B01J; B01J20/00; B01J20/22; B01J20/26; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/26; B41M5/30; B41M5/333; B41M5/3331; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; C08; C08F; C08F2/00; C08F2/44; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
An oil-absorbent pack which comprises particles of cross-linked polymer (P) packed in a bag made of a hydrophobic porous cloth, wherein said particles absorb oil which passes through said cloth from an outer side to an inner side of said pack and said cross-linked polymer (P) is obtained by polymerizing a monomer component (A) comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth) acrylate, the alkyl group of which has 10 to 16 carbon atoms and having one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer (B) having at least two polymerizable unsaturated groups in the molecular unit thereof, providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight.
Claim 2
Dependent Claim
139 words
An oil-absorbent pack which comprises particles of cross-linked polymer (P) packed in a bag made of a hydrophobic porous cloth, wherein said particles absorb oil which passes through said cloth from an outer side to an inner side of said pack and said cross-linked polymer (P) is obtained by polymerizing a monomer component (A) comprising 90 to 99.999% by weight of a monomer having as a main moiety thereof an alkyl (meth) acrylate, the alkyl group of which has 10 to 16 carbon atoms and having one polymerizable unsaturated group in the molecular unit thereof and 0.001 to 10% by weight of a cross-linkable monomer (B) having at least two polymerizable unsaturated groups in the molecular unit thereof, providing that the total of the amount of the polymerizable monomer and that of the cross-linkable monomer is 100% by weight.
Claim 3
Dependent Claim
18 words
An oil-absorbent pack according to claim 1, wherein particle diameter of said particles is 0.01 to 2 mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-19 | 1998-06-20 | 1998-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-19 | 2002-06-20 | 2002-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-19 | 2006-06-20 | 2006-12-20 | $7700.00 | Window Closed / Lapsed |